SBrick with LEGO Sound Siren
  
  
    Still answering to Maxime Boche: I think it's preferable to use a LEGO 9V Sound Siren and drive with just ON (100% PWM) /OFF (0% PWM = COAST or BREAK). This is already possible with the SBrick App.  
    
    
    
    
      
    
    Posted    December 29, 2014          
  
    
    
    
    
    
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